English verb conjugation
COULD HARROW

Regular verb: harrow - harrowed - harrowed

Affirmation

Simple form	V-ing form
I could harrow you could harrow he could harrow we could harrow you could harrow they could harrow	I could be harrowing you could be harrowing he could be harrowing we could be harrowing you could be harrowing they could be harrowing
Perfect	V-ing perfect
I could have harrowed you could have harrowed he could have harrowed we could have harrowed you could have harrowed they could have harrowed	I could have been harrowing you could have been harrowing he could have been harrowing we could have been harrowing you could have been harrowing they could have been harrowing

Negation

Simple form	V-ing form
I could not harrow you could not harrow he could not harrow we could not harrow you could not harrow they could not harrow	I could not be harrowing you could not be harrowing he could not be harrowing we could not be harrowing you could not be harrowing they could not be harrowing
Perfect	V-ing perfect
I could not have harrowed you could not have harrowed he could not have harrowed we could not have harrowed you could not have harrowed they could not have harrowed	I could not have been harrowing you could not have been harrowing he could not have been harrowing we could not have been harrowing you could not have been harrowing they could not have been harrowing

Interrogative form

Simple form	V-ing form
could I harrow? could you harrow? could he harrow? could we harrow? could you harrow? could they harrow?	could I be harrowing? could you be harrowing? could he be harrowing? could we be harrowing? could you be harrowing? could they be harrowing?
Perfect	V-ing perfect
could I have harrowed? could you have harrowed? could he have harrowed? could we have harrowed? could you have harrowed? could they have harrowed?	could I have been harrowing? could you have been harrowing? could he have been harrowing? could we have been harrowing? could you have been harrowing? could they have been harrowing?

Interro-negative form

Simple form	V-ing form
could I not harrow? could you not harrow? could he not harrow? could we not harrow? could you not harrow? could they not harrow?	could I not be harrowing? could you not be harrowing? could he not be harrowing? could we not be harrowing? could you not be harrowing? could they not be harrowing?
Perfect	V-ing perfect
could I not have harrowed? could you not have harrowed? could he not have harrowed? could we not have harrowed? could you not have harrowed? could they not have harrowed?	could I not have been harrowing? could you not have been harrowing? could he not have been harrowing? could we not have been harrowing? could you not have been harrowing? could they not have been harrowing?